/*
*  Copyright 2019-2020 Zheng Jie
*
*  Licensed under the Apache License, Version 2.0 (the "License");
*  you may not use this file except in compliance with the License.
*  You may obtain a copy of the License at
*
*  http://www.apache.org/licenses/LICENSE-2.0
*
*  Unless required by applicable law or agreed to in writing, software
*  distributed under the License is distributed on an "AS IS" BASIS,
*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*  See the License for the specific language governing permissions and
*  limitations under the License.
*/
package me.zhengjie.service.impl;

import me.zhengjie.domain.BookClassification;
import me.zhengjie.exception.EntityExistException;
import me.zhengjie.utils.ValidationUtil;
import me.zhengjie.utils.FileUtil;
import lombok.RequiredArgsConstructor;
import me.zhengjie.repository.BookClassificationRepository;
import me.zhengjie.service.BookClassificationService;
import me.zhengjie.service.dto.BookClassificationDto;
import me.zhengjie.service.dto.BookClassificationQueryCriteria;
import me.zhengjie.service.mapstruct.BookClassificationMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import me.zhengjie.utils.PageUtil;
import me.zhengjie.utils.QueryHelp;
import java.util.List;
import java.util.Map;
import java.io.IOException;
import javax.servlet.http.HttpServletResponse;
import java.util.ArrayList;
import java.util.LinkedHashMap;

/**
* @website https://el-admin.vip
* @description 服务实现
* @author ...
* @date 2020-11-08
**/
@Service
@RequiredArgsConstructor
public class BookClassificationServiceImpl implements BookClassificationService {

    private final BookClassificationRepository bookClassificationRepository;
    private final BookClassificationMapper bookClassificationMapper;

    @Override
    public Map<String,Object> queryAll(BookClassificationQueryCriteria criteria, Pageable pageable){
        Page<BookClassification> page = bookClassificationRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder),pageable);
        return PageUtil.toPage(page.map(bookClassificationMapper::toDto));
    }

    @Override
    public List<BookClassificationDto> queryAll(BookClassificationQueryCriteria criteria){
        return bookClassificationMapper.toDto(bookClassificationRepository.findAll((root, criteriaQuery, criteriaBuilder) -> QueryHelp.getPredicate(root,criteria,criteriaBuilder)));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public BookClassificationDto findById(Integer classificationId) {
        BookClassification bookClassification = bookClassificationRepository.findById(classificationId).orElseGet(BookClassification::new);
        ValidationUtil.isNull(bookClassification.getClassificationId(),"BookClassification","classificationId",classificationId);
        return bookClassificationMapper.toDto(bookClassification);
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public BookClassificationDto create(BookClassification resources) {
        if(bookClassificationRepository.findByClassificationSymbol(resources.getClassificationSymbol()) != null){
            throw new EntityExistException(BookClassification.class,"classification_symbol",resources.getClassificationSymbol());
        }
        return bookClassificationMapper.toDto(bookClassificationRepository.save(resources));
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(BookClassification resources) {
        BookClassification bookClassification = bookClassificationRepository.findById(resources.getClassificationId()).orElseGet(BookClassification::new);
        ValidationUtil.isNull( bookClassification.getClassificationId(),"BookClassification","id",resources.getClassificationId());
        BookClassification bookClassification1 = bookClassificationRepository.findByClassificationSymbol(resources.getClassificationSymbol());
        if(bookClassification1 != null && !bookClassification1.getClassificationId().equals(bookClassification.getClassificationId())){
            throw new EntityExistException(BookClassification.class,"classification_symbol",resources.getClassificationSymbol());
        }
        bookClassification.copy(resources);
        bookClassificationRepository.save(bookClassification);
    }

    @Override
    public void deleteAll(Integer[] ids) {
        for (Integer classificationId : ids) {
            bookClassificationRepository.deleteById(classificationId);
        }
    }

    @Override
    public void download(List<BookClassificationDto> all, HttpServletResponse response) throws IOException {
        List<Map<String, Object>> list = new ArrayList<>();
        for (BookClassificationDto bookClassification : all) {
            Map<String,Object> map = new LinkedHashMap<>();
            map.put("分类名 ", bookClassification.getClassificationName());
            map.put("分类号 ", bookClassification.getClassificationSymbol());
            map.put("父类 ", bookClassification.getParentClassificationId());
            map.put("是否启用 1启用 0未启用", bookClassification.getIsEnable());
            list.add(map);
        }
        FileUtil.downloadExcel(list, response);
    }
}